Two beams of red and violet colours are made to pass separately through a prism of A = 60°. In the minimum deviation position, the angle of refraction inside the prism will be

Question

Two beams of red and violet colours are made to pass separately through a prism of A = 60°. In the minimum deviation position, the angle of refraction inside the prism will be (A) greater for violet colour (B) 30° for both the colours (C) greater for red colour (D) equal but not 30° for both the colours

Tardigrade Admin · Accepted Answer

Here, Angle of prism, A=60° For minimum deviation, A=2 r or r=(A/2)=(60°/2)=30° for both colours.

Q. Two beams of red and violet colours are made to pass separately through a prism of $A = 6 0^{\circ}$ . In the minimum deviation position, the angle of refraction inside the prism will be

greater for violet colour

$3 0^{\circ}$ for both the colours

greater for red colour

equal but not $3 0^{\circ}$ for both the colours

Here, Angle of prism, $A = 6 0^{\circ}$
For minimum deviation, $A = 2 r$
or $r = \frac{A}{2} = \frac{6 0 ^{\circ}}{2} = 3 0^{\circ}$ for both colours.

Q. Two beams of red and violet colours are made to pass separately through a prism of A=60∘. In the minimum deviation position, the angle of refraction inside the prism will be

greater for violet colour

30∘ for both the colours

greater for red colour

equal but not 30∘ for both the colours

Here, Angle of prism, A=60∘ For minimum deviation, A=2r or r=2A​=260∘​=30∘ for both colours.

Q. Two beams of red and violet colours are made to pass separately through a prism of $A = 6 0^{\circ}$ . In the minimum deviation position, the angle of refraction inside the prism will be

$3 0^{\circ}$ for both the colours

equal but not $3 0^{\circ}$ for both the colours

Here, Angle of prism, $A = 6 0^{\circ}$
For minimum deviation, $A = 2 r$
or $r = \frac{A}{2} = \frac{6 0 ^{\circ}}{2} = 3 0^{\circ}$ for both colours.